tests/periph_gpio_exti: let build fail w/o GPIO
tests/periph_gpio_exti: let build fail w/o GPIO

adrianghc/RIOT,x3ro/RIOT,aeneby/RIOT,syin2/RIOT,centurysys/RIOT,JensErdmann/RIOT,JensErdmann/RIOT,fnack/RIOT,ThanhVic/RIOT,msolters/RIOT,ximus/RIOT,herrfz/RIOT,adrianghc/RIOT,PSHIVANI/Riot-Code,tdautc19841202/RIOT,Hyungsin/RIOT-OS,backenklee/RIOT,zhuoshuguo/RIOT,rfswarm/RIOT,cladmi/RIOT,gbarnett/RIOT,asanka-code/RIOT,l3nko/RIOT,rfswarm2/RIOT,MonsterCode8000/RIOT,Lexandro92/RIOT-CoAP,jhollister/RIOT,A-Paul/RIOT,jasonatran/RIOT,AnonMall/RIOT,msolters/RIOT,OTAkeys/RIOT,LudwigOrtmann/RIOT,asanka-code/RIOT,A-Paul/RIOT,shady33/RIOT,ximus/RIOT,syin2/RIOT,Darredevil/RIOT,JensErdmann/RIOT,arvindpdmn/RIOT,gautric/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,adjih/RIOT,kYc0o/RIOT,rakendrathapa/RIOT,1blankz7/RIOT,shady33/RIOT,OlegHahm/RIOT,BytesGalore/RIOT,l3nko/RIOT,sgso/RIOT,abp719/RIOT,khhhh/RIOT,OTAkeys/RIOT,ximus/RIOT,tdautc19841202/RIOT,nsol-nmsu/RIOT,RIOT-OS/RIOT,gebart/RIOT,MonsterCode8000/RIOT,TobiasFredersdorf/RIOT,jbeyerstedt/RIOT-OTA-update,ThanhVic/RIOT,d00616/RIOT,jasonatran/RIOT,kb2ma/RIOT,Osblouf/RIOT,beurdouche/RIOT,watr-li/RIOT,thomaseichinger/RIOT,dkm/RIOT,stevenj/RIOT,cladmi/RIOT,basilfx/RIOT,adjih/RIOT,neumodisch/RIOT,d00616/RIOT,rfswarm2/RIOT,immesys/RiSyn,beurdouche/RIOT,x3ro/RIOT,josephnoir/RIOT,Hyungsin/RIOT-OS,EmuxEvans/RIOT,biboc/RIOT,neiljay/RIOT,emmanuelsearch/RIOT,phiros/RIOT,FrancescoErmini/RIOT,toonst/RIOT,alignan/RIOT,tfar/RIOT,openkosmosorg/RIOT,attdona/RIOT,Osblouf/RIOT,ant9000/RIOT,adjih/RIOT,daniel-k/RIOT,brettswann/RIOT,openkosmosorg/RIOT,khhhh/RIOT,kbumsik/RIOT,MarkXYang/RIOT,EmuxEvans/RIOT,kYc0o/RIOT,Ell-i/RIOT,nsol-nmsu/RIOT,kbumsik/RIOT,rfswarm/RIOT,josephnoir/RIOT,Lexandro92/RIOT-CoAP,ntrtrung/RIOT,asanka-code/RIOT,rajma996/RIOT,FrancescoErmini/RIOT,malosek/RIOT,chris-wood/RIOT,alex1818/RIOT,herrfz/RIOT,latsku/RIOT,emmanuelsearch/RIOT,tfar/RIOT,adjih/RIOT,dhruvvyas90/RIOT,RBartz/RIOT,OTAkeys/RIOT,lazytech-org/RIOT,mziegert/RIOT,Lexandro92/RIOT-CoAP,Hyungsin/RIOT-OS,gbarnett/RIOT,rakendrathapa/RIOT,alex1818/RIOT,centurysys/RIOT,MarkXYang/RIOT,syin2/RIOT,patkan/RIOT,phiros/RIOT,automote/RIOT,ks156/RIOT,lebrush/RIOT,dhruvvyas90/RIOT,dhruvvyas90/RIOT,khhhh/RIOT,jbeyerstedt/RIOT-OTA-update,msolters/RIOT,MarkXYang/RIOT,avmelnikoff/RIOT,d00616/RIOT,sgso/RIOT,Ell-i/RIOT,gebart/RIOT,RubikonAlpha/RIOT,mfrey/RIOT,zhuoshuguo/RIOT,toonst/RIOT,abp719/RIOT,smlng/RIOT,JensErdmann/RIOT,cladmi/RIOT,adjih/RIOT,biboc/RIOT,rakendrathapa/RIOT,Hyungsin/RIOT-OS,thiagohd/RIOT,aeneby/RIOT,kerneltask/RIOT,l3nko/RIOT,gbarnett/RIOT,ks156/RIOT,x3ro/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,RBartz/RIOT,phiros/RIOT,rfswarm/RIOT,kerneltask/RIOT,koenning/RIOT,centurysys/RIOT,josephnoir/RIOT,luciotorre/RIOT,daniel-k/RIOT,FrancescoErmini/RIOT,1blankz7/RIOT,rousselk/RIOT,Darredevil/RIOT,luciotorre/RIOT,yogo1212/RIOT,MarkXYang/RIOT,tfar/RIOT,malosek/RIOT,Josar/RIOT,plushvoxel/RIOT,JensErdmann/RIOT,LudwigOrtmann/RIOT,OlegHahm/RIOT,Josar/RIOT,miri64/RIOT,plushvoxel/RIOT,backenklee/RIOT,koenning/RIOT,immesys/RiSyn,haoyangyu/RIOT,sumanpanchal/RIOT,MohmadAyman/RIOT,RubikonAlpha/RIOT,brettswann/RIOT,TobiasFredersdorf/RIOT,TobiasFredersdorf/RIOT,rakendrathapa/RIOT,kYc0o/RIOT,MarkXYang/RIOT,x3ro/RIOT,sgso/RIOT,herrfz/RIOT-old,arvindpdmn/RIOT,smlng/RIOT,toonst/RIOT,ximus/RIOT,jbeyerstedt/RIOT-OTA-update,rfswarm/RIOT,kerneltask/RIOT,thiagohd/RIOT,basilfx/RIOT,plushvoxel/RIOT,OlegHahm/RIOT,changbiao/RIOT,attdona/RIOT,katezilla/RIOT,dhruvvyas90/RIOT,phiros/RIOT,kaleb-himes/RIOT,nsol-nmsu/RIOT,adrianghc/RIOT,Lexandro92/RIOT-CoAP,avmelnikoff/RIOT,DipSwitch/RIOT,fnack/RIOT,mfrey/RIOT,sgso/RIOT,emmanuelsearch/RIOT,abkam07/RIOT,katezilla/RIOT,robixnai/RIOT,mtausig/RIOT,abkam07/RIOT,locicontrols/RIOT,daniel-k/RIOT,d00616/RIOT,plushvoxel/RIOT,altairpearl/RIOT,sumanpanchal/RIOT,nsol-nmsu/RIOT,kushalsingh007/RIOT,rakendrathapa/RIOT,haoyangyu/RIOT,kbumsik/RIOT,malosek/RIOT,gbarnett/RIOT,dkm/RIOT,tfar/RIOT,attdona/RIOT,shady33/RIOT,AnonMall/RIOT,basilfx/RIOT,luciotorre/RIOT,OTAkeys/RIOT,dkm/RIOT,Hyungsin/RIOT-OS,robixnai/RIOT,plushvoxel/RIOT,1blankz7/RIOT,haoyangyu/RIOT,TobiasFredersdorf/RIOT,ks156/RIOT,daniel-k/RIOT,binarylemon/RIOT,RubikonAlpha/RIOT,hamilton-mote/RIOT-OS,thomaseichinger/RIOT,wentaoshang/RIOT,josephnoir/RIOT,EmuxEvans/RIOT,MonsterCode8000/RIOT,kaspar030/RIOT,benoit-canet/RIOT,alex1818/RIOT,thiagohd/RIOT,adrianghc/RIOT,yogo1212/RIOT,rfuentess/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,OlegHahm/RIOT,robixnai/RIOT,OTAkeys/RIOT,wentaoshang/RIOT,phiros/RIOT,RIOT-OS/RIOT,BytesGalore/RIOT,bartfaizoltan/RIOT,OlegHahm/RIOT,backenklee/RIOT,cladmi/RIOT,binarylemon/RIOT,avmelnikoff/RIOT,wentaoshang/RIOT,mziegert/RIOT,brettswann/RIOT,attdona/RIOT,backenklee/RIOT,alignan/RIOT,avmelnikoff/RIOT,herrfz/RIOT,kerneltask/RIOT,kaspar030/RIOT,A-Paul/RIOT,katezilla/RIOT,FrancescoErmini/RIOT,jhollister/RIOT,neiljay/RIOT,robixnai/RIOT,Ell-i/RIOT,rfswarm2/RIOT,zhuoshuguo/RIOT,rfswarm2/RIOT,alex1818/RIOT,khhhh/RIOT,koenning/RIOT,jferreir/RIOT,nsol-nmsu/RIOT,beurdouche/RIOT,gautric/RIOT,AnonMall/RIOT,locicontrols/RIOT,BytesGalore/RIOT,mfrey/RIOT,A-Paul/RIOT,RBartz/RIOT,marcosalm/RIOT,ks156/RIOT,yogo1212/RIOT,Osblouf/RIOT,LudwigOrtmann/RIOT,lazytech-org/RIOT,locicontrols/RIOT,MohmadAyman/RIOT,EmuxEvans/RIOT,gbarnett/RIOT,kushalsingh007/RIOT,smlng/RIOT,DipSwitch/RIOT,ThanhVic/RIOT,rajma996/RIOT,patkan/RIOT,basilfx/RIOT,tdautc19841202/RIOT,emmanuelsearch/RIOT,biboc/RIOT,FrancescoErmini/RIOT,dailab/RIOT,authmillenon/RIOT,brettswann/RIOT,ntrtrung/RIOT,kYc0o/RIOT,miri64/RIOT,A-Paul/RIOT,koenning/RIOT,msolters/RIOT,kaspar030/RIOT,herrfz/RIOT-old,rakendrathapa/RIOT,asanka-code/RIOT,roberthartung/RIOT,stevenj/RIOT,automote/RIOT,ant9000/RIOT,alex1818/RIOT,TobiasFredersdorf/RIOT,ant9000/RIOT,herrfz/RIOT-old,marcosalm/RIOT,asanka-code/RIOT,authmillenon/RIOT,jferreir/RIOT,shady33/RIOT,abp719/RIOT,FrancescoErmini/RIOT,MonsterCode8000/RIOT,RBartz/RIOT,wentaoshang/RIOT,altairpearl/RIOT,AnonMall/RIOT,BytesGalore/RIOT,changbiao/RIOT,neiljay/RIOT,herrfz/RIOT,stevenj/RIOT,locicontrols/RIOT,marcosalm/RIOT,tdautc19841202/RIOT,Darredevil/RIOT,wentaoshang/RIOT,stevenj/RIOT,luciotorre/RIOT,tdautc19841202/RIOT,latsku/RIOT,marcosalm/RIOT,ks156/RIOT,l3nko/RIOT,sgso/RIOT,1blankz7/RIOT,PSHIVANI/Riot-Code,bartfaizoltan/RIOT,jferreir/RIOT,rajma996/RIOT,l3nko/RIOT,MonsterCode8000/RIOT,dailab/RIOT,neumodisch/RIOT,wentaoshang/RIOT,jremmert-phytec-iot/RIOT,abkam07/RIOT,tdautc19841202/RIOT,jbeyerstedt/RIOT-OTA-update,rousselk/RIOT,roberthartung/RIOT,toonst/RIOT,Ell-i/RIOT,msolters/RIOT,kaleb-himes/RIOT,attdona/RIOT,RBartz/RIOT,kaleb-himes/RIOT,bartfaizoltan/RIOT,mfrey/RIOT,RIOT-OS/RIOT,AnonMall/RIOT,brettswann/RIOT,fnack/RIOT,MarkXYang/RIOT,miri64/RIOT,kb2ma/RIOT,Yonezawa-T2/RIOT,ximus/RIOT,alignan/RIOT,altairpearl/RIOT,robixnai/RIOT,Yonezawa-T2/RIOT,immesys/RiSyn,locicontrols/RIOT,RubikonAlpha/RIOT,jfischer-phytec-iot/RIOT,ntrtrung/RIOT,LudwigKnuepfer/RIOT,lebrush/RIOT,rfswarm/RIOT,thomaseichinger/RIOT,MonsterCode8000/RIOT,asanka-code/RIOT,jasonatran/RIOT,smlng/RIOT,gbarnett/RIOT,automote/RIOT,kbumsik/RIOT,lebrush/RIOT,rfswarm/RIOT,Darredevil/RIOT,l3nko/RIOT,rfswarm2/RIOT,openkosmosorg/RIOT,sumanpanchal/RIOT,abkam07/RIOT,authmillenon/RIOT,adrianghc/RIOT,watr-li/RIOT,lazytech-org/RIOT,jferreir/RIOT,phiros/RIOT,DipSwitch/RIOT,gebart/RIOT,katezilla/RIOT,hamilton-mote/RIOT-OS,arvindpdmn/RIOT,patkan/RIOT,gebart/RIOT,msolters/RIOT,toonst/RIOT,khhhh/RIOT,Ell-i/RIOT,jhollister/RIOT,neumodisch/RIOT,kushalsingh007/RIOT,emmanuelsearch/RIOT,sgso/RIOT,RIOT-OS/RIOT,altairpearl/RIOT,rfuentess/RIOT,authmillenon/RIOT,Osblouf/RIOT,centurysys/RIOT,jfischer-phytec-iot/RIOT,roberthartung/RIOT,authmillenon/RIOT,benoit-canet/RIOT,JensErdmann/RIOT,jremmert-phytec-iot/RIOT,jferreir/RIOT,jremmert-phytec-iot/RIOT,patkan/RIOT,rousselk/RIOT,miri64/RIOT,kb2ma/RIOT,mziegert/RIOT,dhruvvyas90/RIOT,ThanhVic/RIOT,benoit-canet/RIOT,binarylemon/RIOT,kaspar030/RIOT,gautric/RIOT,fnack/RIOT,automote/RIOT,marcosalm/RIOT,katezilla/RIOT,Osblouf/RIOT,AnonMall/RIOT,emmanuelsearch/RIOT,latsku/RIOT,DipSwitch/RIOT,syin2/RIOT,abkam07/RIOT,gebart/RIOT,openkosmosorg/RIOT,LudwigKnuepfer/RIOT,bartfaizoltan/RIOT,hamilton-mote/RIOT-OS,syin2/RIOT,biboc/RIOT,locicontrols/RIOT,sumanpanchal/RIOT,biboc/RIOT,RBartz/RIOT,lebrush/RIOT,mtausig/RIOT,rajma996/RIOT,stevenj/RIOT,latsku/RIOT,dailab/RIOT,patkan/RIOT,dkm/RIOT,backenklee/RIOT,Lexandro92/RIOT-CoAP,thomaseichinger/RIOT,LudwigKnuepfer/RIOT,basilfx/RIOT,dhruvvyas90/RIOT,altairpearl/RIOT,rousselk/RIOT,yogo1212/RIOT,watr-li/RIOT,dailab/RIOT,herrfz/RIOT,luciotorre/RIOT,lebrush/RIOT,daniel-k/RIOT,herrfz/RIOT-old,mziegert/RIOT,DipSwitch/RIOT,locicontrols/RIOT,MohmadAyman/RIOT,binarylemon/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,sumanpanchal/RIOT,jfischer-phytec-iot/RIOT,lazytech-org/RIOT,automote/RIOT,yogo1212/RIOT,benoit-canet/RIOT,automote/RIOT,PSHIVANI/Riot-Code,aeneby/RIOT,kushalsingh007/RIOT,roberthartung/RIOT,miri64/RIOT,Josar/RIOT,thiagohd/RIOT,rajma996/RIOT,koenning/RIOT,chris-wood/RIOT,abp719/RIOT,MohmadAyman/RIOT,Josar/RIOT,authmillenon/RIOT,LudwigOrtmann/RIOT,alignan/RIOT,1blankz7/RIOT,PSHIVANI/Riot-Code,sumanpanchal/RIOT,PSHIVANI/Riot-Code,kaleb-himes/RIOT,shady33/RIOT,jremmert-phytec-iot/RIOT,1blankz7/RIOT,binarylemon/RIOT,fnack/RIOT,haoyangyu/RIOT,LudwigOrtmann/RIOT,neumodisch/RIOT,kYc0o/RIOT,lazytech-org/RIOT,ThanhVic/RIOT,thiagohd/RIOT,watr-li/RIOT,changbiao/RIOT,LudwigOrtmann/RIOT,bartfaizoltan/RIOT,LudwigKnuepfer/RIOT,DipSwitch/RIOT,alex1818/RIOT,beurdouche/RIOT,immesys/RiSyn,jhollister/RIOT,hamilton-mote/RIOT-OS,mtausig/RIOT,cladmi/RIOT,Darredevil/RIOT,yogo1212/RIOT,thomaseichinger/RIOT,beurdouche/RIOT,tfar/RIOT,daniel-k/RIOT,avmelnikoff/RIOT,RIOT-OS/RIOT,ximus/RIOT,malosek/RIOT,dailab/RIOT,MohmadAyman/RIOT,immesys/RiSyn,malosek/RIOT,jhollister/RIOT,zhuoshuguo/RIOT,rousselk/RIOT,abp719/RIOT,dkm/RIOT,lebrush/RIOT,chris-wood/RIOT,roberthartung/RIOT,Osblouf/RIOT,khhhh/RIOT,jhollister/RIOT,haoyangyu/RIOT,rajma996/RIOT,haoyangyu/RIOT,ant9000/RIOT,d00616/RIOT,PSHIVANI/Riot-Code,gautric/RIOT,Josar/RIOT,ntrtrung/RIOT,malosek/RIOT,ntrtrung/RIOT,attdona/RIOT,jfischer-phytec-iot/RIOT,ant9000/RIOT,Lexandro92/RIOT-CoAP,zhuoshuguo/RIOT,kaleb-himes/RIOT,mtausig/RIOT,Yonezawa-T2/RIOT,koenning/RIOT,x3ro/RIOT,RubikonAlpha/RIOT,neumodisch/RIOT,centurysys/RIOT,bartfaizoltan/RIOT,Yonezawa-T2/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,rousselk/RIOT,EmuxEvans/RIOT,RubikonAlpha/RIOT,josephnoir/RIOT,altairpearl/RIOT,mfrey/RIOT,openkosmosorg/RIOT,mziegert/RIOT,jremmert-phytec-iot/RIOT,zhuoshuguo/RIOT,marcosalm/RIOT,kushalsingh007/RIOT,smlng/RIOT,chris-wood/RIOT,kaspar030/RIOT,latsku/RIOT,chris-wood/RIOT,aeneby/RIOT,herrfz/RIOT-old,kb2ma/RIOT,jremmert-phytec-iot/RIOT,fnack/RIOT,d00616/RIOT,alignan/RIOT,stevenj/RIOT,herrfz/RIOT,kushalsingh007/RIOT,jbeyerstedt/RIOT-OTA-update,abkam07/RIOT,mtausig/RIOT,latsku/RIOT,binarylemon/RIOT,kerneltask/RIOT,gautric/RIOT,jfischer-phytec-iot/RIOT,MohmadAyman/RIOT,Yonezawa-T2/RIOT,Yonezawa-T2/RIOT,rfuentess/RIOT,shady33/RIOT,centurysys/RIOT,mziegert/RIOT,benoit-canet/RIOT,LudwigKnuepfer/RIOT,EmuxEvans/RIOT,changbiao/RIOT,Darredevil/RIOT,immesys/RiSyn,ntrtrung/RIOT,openkosmosorg/RIOT,changbiao/RIOT,chris-wood/RIOT,rfuentess/RIOT,watr-li/RIOT,thiagohd/RIOT,rfuentess/RIOT,ThanhVic/RIOT,neumodisch/RIOT,robixnai/RIOT,arvindpdmn/RIOT,arvindpdmn/RIOT,kb2ma/RIOT,brettswann/RIOT,kbumsik/RIOT,hamilton-mote/RIOT-OS,arvindpdmn/RIOT,neiljay/RIOT,changbiao/RIOT,benoit-canet/RIOT,abp719/RIOT,patkan/RIOT,luciotorre/RIOT,BytesGalore/RIOT,neiljay/RIOT,jferreir/RIOT,jasonatran/RIOT,aeneby/RIOT,jasonatran/RIOT,watr-li/RIOT,rfswarm2/RIOT